Polystyrene imitating padauk composite material and preparation method thereof

A composite material, polystyrene technology, applied in the direction of polymer impregnation, wood impregnation, wood impregnation, etc., can solve the problems of poor dimensional stability, can not improve dimensional stability, creep and other problems, achieve low cost, improve density, Economical effect

Inactive Publication Date: 2009-12-16
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as we all know, most polymer materials have creep phenomenon, that is, poor dimensional stability.
The wood component in the above composites does not contribute to dimensional stability

Method used

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  • Polystyrene imitating padauk composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (1) immerse a piece of pine board in 1% NaOH lye to carry out reflux degreasing treatment, the treatment time is 10 hours, and the treatment temperature is 80°C;

[0039] (2) Take out the wood, wash away the lye with water at 60°C, and then dry it at 60°C;

[0040] (3) At room temperature, vacuum the wood for 1 hour, then inject styrene monomer and dye (disperse bright red HBGL) under vacuum, the mass ratio of styrene monomer to dye is 40:1, wait for After the solution immerses the wood, remove the vacuum and maintain the immersion for 1 hour;

[0041] (4) Place the wood soaked with styrene monomer and dye in a dryer, and carry out polystyrene polymerization at a temperature of 120° C. for 12 hours;

[0042] (5) Take out the imitation mahogany composite material with polystyrene as the reinforcing material, and it is the finished product after being properly packaged.

Embodiment 2

[0044] (1) Immerse a Chinese fir board in 1.5% NaOH lye to carry out reflux degreasing treatment, the treatment time is 12 hours, and the treatment temperature is 90°C;

[0045] (2) Take out the wood, wash away the lye with reflux at 70°C, and then dry it at a temperature of 65°C;

[0046] (3) At room temperature, vacuum the wood for 2 hours, then inject styrene monomer and dye (disperse bright red S-BWFL) under vacuum, the mass ratio of styrene monomer to dye is 50:1 , remove the vacuum after the solution is immersed in the wood, and maintain the immersion for 2 hours;

[0047] (4) Place the wood soaked with styrene monomer and dye in a dryer, and carry out polystyrene polymerization at a temperature of 130° C. for 15 hours;

[0048] (5) Take out the imitation mahogany composite material with polystyrene as the reinforcing material, and it is the finished product after being properly packaged.

Embodiment 3

[0050] (1) Immerse a cypress board in 2% Na 2 CO 3 Carry out reflux degreasing treatment in the lye, the treatment time is 15 hours, and the treatment temperature is 95°C;

[0051] (2) Take out the wood, wash away the lye with water at 80°C, and then dry it at a temperature of 70°C;

[0052] (3) At room temperature, vacuum the wood for 2.5 hours, then inject styrene monomer and dyes (disperse scarlet HBGL and disperse scarlet BWFL, mass ratio 1:1) under vacuum, styrene monomer The mass ratio to the dye is 60:1, remove the vacuum after the solution is immersed in the wood, and maintain the immersion for 2.5 hours;

[0053] (4) Place the wood soaked with styrene monomer, catalyst and dye solution in a dryer, and carry out polystyrene polymerization at a temperature of 140°C for 15 hours;

[0054] (5) Take out the imitation mahogany composite material with polystyrene as the reinforcing material, and it is the finished product after being properly packaged.

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Abstract

The invention relates to a polystyrene imitating padauk composite material and a preparation method thereof. The material is a composite material prepared by using soft wood as a substrate and introducing styrene monomer into the wood to polymerize. The preparation method comprises the following steps: (1) soaking the soft wood in lye, reflowing for derosination; (2) reflowing the wood with water at 30 to 100 DEG C to wash away the lye, drying the wood; (3) introducing styrene monomer and dye into the soft wood under vacuum condition; (4) placing the soft wood soaked with the styrene monomer and dye in a drier to polymerize to produce the polystyrene for 10 to 20 hours. The composite material of the invention increases the density of the wood, reduces the water absorption rate, swell-shrink characteristic and sensitivity to weather of the wood, improves the stability of size and balance of mechanical property, and has simple operation of preparation method, low cost and high economic effect.

Description

technical field [0001] The invention belongs to the field of imitation mahogany composite material and its preparation, in particular to a polystyrene imitation mahogany composite material and a preparation method thereof. Background technique [0002] Mahogany is a kind of precious wood, mainly red sandalwood (RED SANDALWOOD, mainly produced in India, Vietnam, Thailand, Myanmar and Nanyang Islands), rosewood (BLACKWOOD, distributed in tropical and subtropical regions), rosewood (PADAK, distributed in tropical regions of the world), wenge, etc. Mahogany has the characteristics of compact structure, corrosion resistance, hard and delicate material, special aroma, and deep color. It is a fine wood product and has been favored by people for a long time. [0003] Redwood has a long growth period. After long-term logging by humans, redwood resources have been greatly reduced. In the context of countries strengthening the protection of their own forest resources, mahogany has gr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/15B27K3/38B27K3/50
Inventor 杨庆苏峰章悦庭袁增艺黄秀成甘菊
Owner DONGHUA UNIV
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